A Fatigue Accelerated Model of Correlating Proving Ground with Customers Usage for Bus

A new regression model of correlated proving ground with customers usage was proposed based on the mismatch in the current test of customer correlative acceleration fatigue in proving ground, combined with collection and treatment of the bus load spectrum on proving ground and customer road, and establishment of a pseudo damage model based on the acceleration of shaft head. The correlated fatigue characteristics of steering tie rod, stabilizer bar, front axle propons, longitudinal beam, three acceleration of left front wheel shaft and right back wheel shaft on proving ground and customer road was studied in the whole vehicle. The result shows that the model was better than the other two models on the relative error between proving ground and customer goal and the range of relative fatigue. This model could provide a new point of view for reliability test of a new bus.